Study on Rheology of Partially Hydrolized Polyacrylamide Solution in Low Shear Rate

In low shear rate,HAAKE RS150 rheometer is used to measure effect of concentration,relative molecular quality and salt content concentration on rheology of partially hydrolyzed polyacrylamide solution.The result shows that effect of concentration and relative molecular quality is caused by stable performance of net structure forming among large molecules in HPAM solution.Effect of salt content concentration is cause by charged performance of HPAM solution.Thus the main method for increasing action beween HPAM solution and oil film is: first,increase concentration of HPAM solution or relative molecular quality of HPAM;second,decrease salt content concentration of HPAM solution.This is favorable for improving displacement efficiency of polymer.